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Observator Instruments DIFF User Manual

Automatic volume flow meter with pressure compensation
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OBSERVATOR
instruments
DIFF
Automatic volume flow meter
with pressure compensation
User manual
Version 11.2 - EN
TDC 16 July 2012

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Summary of Contents for Observator Instruments DIFF

  • Page 1 OBSERVATOR instruments DIFF Automatic volume flow meter with pressure compensation User manual Version 11.2 - EN TDC 16 July 2012...

  • Page 2: Table Of Contents

    OBSERVATOR User manual DIFF automatic volume flow meter instruments Index 1. INTRODUCTION ......................... 4   2. DESCRIPTION AND USAGE ..................... 5   2.1 O ...................6   PERATION COMFORT AND ERGONOMICS 2.2 O ..........................6   PERATION 2.3 B ........................6   EFORE FIRST USE  ...
  • Page 3 OBSERVATOR User manual DIFF automatic volume flow meter instruments Page intentionally left blank Page 3 V11.2 - EN TDC 16-7-2012...

  • Page 4: Introduction

    The flow reading is digital and clear, this prevents reading errors. The DIFF is prepared for data storage with SD card and the use of DIFFiner. Please contact your dealer or Observator for this option.

  • Page 5: Description And Usage

    OBSERVATOR User manual DIFF automatic volume flow meter instruments 2. Description and usage Description Scroll button Information display Measuring side DIFF Air inlet/exhaust Point of pressure measuring Connection temperature sensor/motor Page 5 V11.2 - EN TDC 16-7-2012...

  • Page 6: Operation Comfort And Ergonomics

    DIFF does not need to be turned around. Always place the square side over or tight against the grill. For your convenience you are able to set the arms of the Diff in any positon that will make it is easy to operate and to read out. Just make sure the readout panel is not in the airflow.

  • Page 7: Measuring Positions

    The DIFF can be operated with only one button. The readings are shown on the display. The DIFF can be switched on by pushing in the middle of the scroll button. The recess in the scroll button is intended for scrolling.

  • Page 8: The Menu

    DIFF has a temperature divergent from the environment. Please note that the DIFF has to stand on a flat surface and the room has to be free of air flow. When the DIFF is being calibrated the following screens will show up.

  • Page 9: Measurement

    Close doors and windows, the wind can create pressure waves that influence the measurement.  Put the square opening of the DIFF against the vent. When sure that the vent is fully covered the measurement can be started. The measurements can be faulty when the measurement is started before the DIFF is in place.

  • Page 10: Settings

    DIFF – 00220 DIFF – 00220 The screen gives information about the serial number and the driver number of the DIFF. The brightness or contrast is adjustable by turning the selection button. The setting can be confirmed by pressing the selection button.

  • Page 11: Measuring Unit / Temperature Unit

    3.6 OFF The option will power the DIFF down. The DIFF will also be turned off when it is not used for 10 minutes or more. This will prevent unnecessary energy consumption.

  • Page 12: Extension Hoods

    ± 6cm while placing them. There is also a repair kit included to repair holes in the canvas. Check if the pull strings are fit well around the DIFF and pull them tight if they are still a bit loose.

  • Page 13: Batteries

    If you do use these types of batteries, keep in mind that the range most likely will be limited to 100 - 300 m3 / h. It is also possible that the DIFF will power itself down due of voltage drop.

  • Page 14: Maintenance

    Store and transport the DIFF always in the included transport case.  Store the DIFF in dry conditions.  Let the DIFF adjust to the ambient temperature. The DIFF will adjust faster when it is hold against an exhaust vent.  Never remove the grills inside the DIFF.

  • Page 15: Diffiner

    OBSERVATOR User manual DIFF automatic volume flow meter instruments 7. DIFFiner DIFFiner is available as an option with the DIFF. This program makes it possible to:  Store data on a SD-card and/or a PC  Creating measuring reports ...

  • Page 16: Adding A Project

    Click new to create a new project. It is also possible to export projects to a DIFF file. These files can be send to engineers on location. The engineer can import these files onto the DIFF. Click on new to create a new project.

  • Page 17: The Diff With An Sd-Card

    4 SD-card) The time to store the project can increase significantly when a different type of SD-card is used. 7.3 The DIFF with an SD-card Put the SD-card into the DIFF and switch it on. Menu Go to the storage option.
  • Page 18 Supply 1 This screen shows the grill information that can be adjusted if ======================= needed. It is also possible to calibrate the DIFF from this  Measurement screen. The measurement data will be stored after the Calibration selection button is pressed. Don’t switch of the DIFF before ≈≈D :...

  • Page 19: Opening The Data On The Computer

    OBSERVATOR User manual DIFF automatic volume flow meter instruments 7.4 Opening the data on the computer With the measurements finished you can check the data on the pc. Put the SD-card in the reader and start DIFFiner Open the project.

  • Page 20: Sd-Card Messages

    ======================= while the storage menu is opened (which is strongly  Measurement discouraged!). The DIFF will return to the main menu. If the Storage message occurs when the SD card is still present it may be Calibration possible that the SD card is not inserted correctly. Please re- insert the SD-card.

  • Page 21: Decommissioning

    8 Decommissioning 8.1 Decommissioning the DIFF (temporary) Remove the batteries when the DIFF is not going to be used for a couple of weeks or more. Charge them fully before storage. Charging the batteries prevents that they get damaged because off a full discharge.

  • Page 22: Trouble Shooting

    DIFF indicates the wrong flow direction. on the vent. Deviation in the measurement Make sure that the DIFF is fully placed over the vent. The measurement takes a long time Make sure you keep the DIFF in place while measuring. Make sure that there are no gaps between the DIFF and the ceiling.

  • Page 23: Replacing The Fuse

    9.2 Replacing the fuse The DIFF contains a fuse (5x20 mm 250V / 5A slow). The fuse is placed in the right side of the electronics block. The fuse holder can be opened by turning the holder carefully with a big screwdriver.

  • Page 24: Warranty

    OBSERVATOR User manual DIFF automatic volume flow meter instruments 10. Warranty During the warranty period of 12 months after delivery, this product will be repaired without charge for either parts or labor. This limited warranty does not cover, batteries, damage caused by the user or by improper treatment or connecting.

  • Page 25: Appendix: Declaration Of Conformity

    OBSERVATOR User manual DIFF automatic volume flow meter instruments Appendix: Declaration of conformity Page 25 V11.2 - EN TDC 16-7-2012...
  • Page 26 OBSERVATOR User manual DIFF automatic volume flow meter instruments Page 26 V11.2 - EN TDC 16-7-2012...

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